高层建筑屋面雨水排水设计

针对越来越多的高层建筑,提出屋面雨水排水系统设计的依据,阐明系统选择的思路及应注意的问题,总结高层建筑屋面雨水系统设计参考意见。     

明代团城排水设计引发的思考

7月21日,北京城遭遇了61年来最大的暴雨,造成局地积水成了"汪洋"。但身处暴雨中心的北海团城却无一例积水报告。无论下多么大的雨,北海团城都会雨过地皮湿,很快就渗流得一干二净,     

井点排水设计应注意的几个问题

本文主要介绍在井点排水设计中,对选用渗透系数和计算干扰量、影响半径应注意的问題,提出一些看法。     

浅析高速公路排水设计存在的问题

高速公路的排水设计对路基的稳定性及路面的使用寿命具有显著的影响。为此设计人员在进行公路设计时都较重视排水设计。一方面要考虑如何减小地下水、农田排灌水对路基的稳定性及强度的影响，称第一类排水；另一方面要考虑如何将路面表水迅速排出路基之外，最大限度地减少雨水对路基路面施工质量的影响，减少因路面表水排水不畅或路面表水的下渗对路面结构使用性能产生的损害，称第二类排水。     

大底盘高层建筑基础的分析设计

阐述大底盘高层建筑基础设计中流行的几项关键技术,包括基础沉降控制方式;后浇带施工、基础沉降缝、基础整体设计;变刚度调平技术;考虑上部结构刚度设计等,解答了基础电算设计中应注意的问题。     

高层建筑地下库的通风与排烟设计刍议

本文分析了相关规范对高层建筑地下汽车库通风与排烟设计的适用性，并以某大厦为例，阐述了这类系统设计的方法和应注意的问题。     

高层建筑技术层的设计和利用

结合工作经验,分析了高层建筑设计层技术的不足之处,阐述了增加技术层的层高计算方法,技术层的合理利用和技术层应注意的问题。     

高层建筑工程桩基础的设计与检验分析

介绍了某高层建筑工程的场地地质情况、桩基础方案对比与设计计算，并对采用的钻孔灌注桩施工后的检验结果作了分析。     

小高层住宅之我见

近年来,我国的大中城市相继出现了大批小高层住宅,而且十分流行,并得到了居民及开发商的青睐与认可。从节约用地、城市景观、居民生活质量等角度出发,阐述了小高层住宅的优点,并与多层住宅、高层住宅相对照,指出了小高层住宅将成为未来20年住宅建设发展的流行形式。     

建筑室内外环境的一体化设计

本文阐述了建筑室内外环境设计相辅相成的关系,从环境设计的形式、意象、意义等三个层面出发,提出一体化设计的方法、场所精神塑造和文化介入,并结合多年设计实践进行了案例分析。     

Piled Raft Design Strategies for High Rise Buildings

Piled rafts have been widely adopted as an effective foundation for designing high-rise buildings because of their efficiency in controlling the total and differential settlements and improving bearing capacity. In many cases the piled rafts settlements are likely to be large, which leads to an increase of the pile length and/or number of piles required to reduce the settlements. However, this increase does not satisfy the design requirements or an economical design. The majority of piled raft foundations has been designed with a uniform pile length and configuration. This paper describes the process of optimizing the design of a piled raft foundation for a high rise building in the Mazandaran province in Iran by considering an economical design methodology in which piles are placed more densely beneath the maximum load positions when the piled raft is subjected to non-uniform loads. By using the ELPLA software in the analysis process, the validity of the software is examined through the results of a report prepared on behalf of Technical Committee TC18 on piled foundations. The study shows that the pile arrangement method can help to considerably reduce the total and differential settlements with similar total pile length as well as the induced bending moments and shear forces of the raft. This study can help practicing engineers to choose pile and raft parameters with the pile arrangement method to produce an economical design.     

钢筋混凝土高层建筑设计中若干问题的探讨

一、概述 目前,我国钢筋混凝土高层建筑发展迅速,结构设计中经常会遇到一些规范或规程未论及的问题,这就需要设计人员积累经验,利用正确的概念进行设计。高层结构计算机程序正进入商品化阶段,每个程序都有一些限制条件和假定,在使用程序时有些应注意的问题往往被设计人员所忽视。另外,有关规范和规程的有些规定不尽合理或不便在设计中实施,值得探讨。由     

Design of Raft Foundations for High-Rise Buildings on Jointed Rock

This paper presents calculations of displacements and bending moments in a 2-m-thick reinforced-concrete foundation slab using three-dimensional finite-element software. A preliminary paper was presented by Justo et al. (Rock Mech Rock Eng 43:287–304, 2010). The slab is the base of a tower of 137 m height above foundation, supported on jointed and partly weathered basalt and scoria. Installation of rod extensometers at different depths below foundation allowed comparison between measured displacements and displacements calculated using moduli obtained from rock classification systems and three material models: elastic, Mohr–Coulomb and hardening (H). Although all three material models can provide acceptable results, the H model is preferable when there are unloading processes. Acceptable values of settlement may be achieved with medium meshing and an approximate distribution of loads. The absolute values of negative bending moments (tensions below) increase as the rock mass modulus decreases or when the mesh is refined. The paper stresses the importance of adequately representing the details of the distribution of loads and the necessity for fine meshing to obtain acceptable values of bending moments.     

超高层建筑采用复合地基和浅基础的设计与施工

广州市淘金家园二期B5-4~7栋超高层建筑工程地下室底部置于全风化与强风化的泥质粉砂岩上，按地基土压板试验情况，设计采用天然地基与复合地基上的浅基础。由于该工程的试验、设计与施工紧密配合，施工措施可靠，成为广州市超高层建筑采用复合地基和浅基础的成功实例。介绍其试验情况、设计思路、施工要点和实施效果。     

基于CAN总线的智能楼宇现场网络系统的设计

在分析楼宇的智能化底层的需求与数据流特征的基础上,介绍了以现场总线CAN为基层通信网络的总体方案和各类组网节点的设计,重点介绍了系统的不同类型报文结构和应用层的通信协议,在网络的安全管理方面采取了特殊措施。该方案可供门禁、报警、巡更和停车场等物业管理方面的底层网络设计中参考和应用。     

The Liquefaction-Collapse Sinkhole Formation and Assessment of Its Danger to Buildings and Structures

Doklady Earth Sciences - A poorly studied genetic type of sinkhole formation, which is typical for areas where karstified rocks are covered by water-saturated or unsaturated cohesionless soils is...     

Seismic Hazard Mitigation for Buildings

Recent natural hazards have exposed the dire consequence of damage and impact upon the built environment. It appears that one of the biggest challenges to the natural hazard mitigation community is how to improve the performance of older building and infrastructure to enhance their ability to withstand natural hazards. By improving their performance, the risk associated with buildings and infrastructure against natural hazards can be mitigated. Within the context of risk management of buildings against earthquakes, the general practice is to follow a three-step process, namely screening, evaluation and mitigation. Screening constitutes a preliminary evaluation process and sets priority for detailed evaluation. Evaluation compares a built environment with code requirements for new construction and sets priority for mitigation. Mitigation can be achieved by means of retrofit or replacement. Retrofit is intended to improve the performance of built environment as required. Replacement may be the only viable solution when economical, technical and environmental considerations are account for.